The fourth and final sister to Celebrity Millennium, Infinity and Summit, the Celebrity Constellation entered service in 2002 and carries up to 2,170 passengers on a variety of itineraries. Sailing to Northern Europe and the Mediterranean in the summer and the Caribbean in the Winter, discerning cruisers will enjoy the tasteful decor and excellent cuisine. Most of Celebrity's ships are registered in Malta, so the Captain can perform legal marriages at sea.